Comment 13 for bug 1848902

Verified to be working on Bionic using the provided test case and another simpler one (simply stopping haproxy resulted in the error/143 status).

Preparing to unpack .../haproxy_1.8.8-1ubuntu0.8_amd64.deb ...
Unpacking haproxy (1.8.8-1ubuntu0.8) over (1.8.8-1ubuntu0.7) ...
Setting up haproxy (1.8.8-1ubuntu0.8) ...
Processing triggers for systemd (237-3ubuntu10.33) ...
Processing triggers for rsyslog (8.32.0-1ubuntu4) ...

root@hap1:~# for x in {1..1000}; do pkill -TERM -x haproxy ; sleep 0.001; systemctl reset-failed haproxy.service; done
root@hap1:~# systemctl status haproxy
● haproxy.service - HAProxy Load Balancer
   Loaded: loaded (/lib/systemd/system/haproxy.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 2019-11-28 15:20:01 UTC; 1s ago
     Docs: man:haproxy(1)
           file:/usr/share/doc/haproxy/configuration.txt.gz
  Process: 8076 ExecStartPre=/usr/sbin/haproxy -f $CONFIG -c -q $EXTRAOPTS (code=exited, status=0/SUCCESS)
 Main PID: 8077 (haproxy)
    Tasks: 2 (limit: 4915)
   CGroup: /system.slice/haproxy.service
           ├─8077 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
           └─8078 /usr/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid

Nov 28 15:20:01 hap1 systemd[1]: Starting HAProxy Load Balancer...
Nov 28 15:20:01 hap1 systemd[1]: Started HAProxy Load Balancer.